SB2017070318 - Fedora 24 update for yara

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Main Vulnerability Database SB2017070318

SB2017070318 - Fedora 24 update for yara

Published: July 3, 2017 Updated: April 24, 2025

Security Bulletin ID SB2017070318
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Uncontrolled Recursion (CVE-ID: CVE-2017-9304)

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule that is mishandled in the _yr_re_emit function.


2) Out-of-bounds read (CVE-ID: CVE-2017-9465)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in The yr_arena_write_data function in YARA 3.6.1. A remote attacker can perform a denial of service (buffer over-read and application crash) or obtain sensitive information from process memory via a crafted file that is mishandled in the yr_re_fast_exec function in libyara/re.c and the _yr_scan_match_callback function in libyara/scan.c.


Remediation

Install update from vendor's website.

References